Mailbag: When and How to Change a Carburetor Accelerator Pump
Q: My Holley-equipped vehicle has a stumble from a dead stop. Someone told me the accelerator pump nozzle may need resized. How do I know if I need to change […]
Booster Basics: How Carburetor Booster Design Relates to Your Vehicle’s Performance
To truly understand how carburetors work, you first have to know Daniel Bernoulli. Bernoulli was an 18th century scientist who discovered that pressure is inversely proportional to velocity. This principle, […]
Carb Science: Two-Circuit vs. Three-Circuit Metering Systems for Race Applications
Before electronic fuel injection’s microprocessors and sensors revolutionized fuel delivery, carburetors fueled high performance machines using mechanical components like metering systems and boosters. Over the years, carburetor manufacturers have developed different metering systems which […]
Monday Mailbag: Setting Up a Brand New Carburetor for Optimum Performance
Q: I was shopping around for a new carburetor recently, and I noticed some carburetors being described as calibrated and ready-to-run out of the box. Is there really such thing as a “ready-to-run” […]
Mailbag: Examining Causes for Sporadic Spark Plug Fouling
Q: I have a mild 383-cubic-inch small block with 9.5:1 compression, Edelbrock Performer RPM intake, and 750 cfm Holley double pumper carburetor. It also has a mild hydraulic roller cam and roller rockers. My question is […]
Carb Checklist: 9 Performance Issues that Can be Traced to Your Carb
The venerable carburetor is arguably the most recognizable hot rod part. That’s because the carburetor has been the crowned jewel of some of the most revered small blocks, big blocks, HEMIs, and six-cylinders to ever […]
Mailbag: Choosing the Right Carburetor for Supercharged Applications
Q: I plan on installing a supercharger in the near future and I’m not sure what carburetor to use. Do I need to upgrade from my current carburetor to a larger carb to get the most […]
Mailbag: Diagnosing Engine Flooding and Hesitation
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re talking about engine flooding and hesitation. A: Those driveability problems are hard to diagnose from […]